/*
 * Created on Feb 9, 2005
 * Created by Alon Rohter
 * Copyright (C) Azureus Software, Inc, All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 */

package org.gudy.azureus2.pluginsimpl.local.network;

import java.util.HashMap;

import org.gudy.azureus2.plugins.messaging.Message;
import org.gudy.azureus2.plugins.messaging.MessageStreamEncoder;
import org.gudy.azureus2.plugins.network.OutgoingMessageQueue;
import org.gudy.azureus2.plugins.network.OutgoingMessageQueueListener;
import org.gudy.azureus2.pluginsimpl.local.messaging.MessageAdapter;
import org.gudy.azureus2.pluginsimpl.local.messaging.MessageStreamEncoderAdapter;

/**
 *
 */
public class OutgoingMessageQueueImpl implements OutgoingMessageQueue {
    private final com.aelitis.azureus.core.networkmanager.OutgoingMessageQueue core_queue;
    private final HashMap registrations = new HashMap();

    protected OutgoingMessageQueueImpl(com.aelitis.azureus.core.networkmanager.OutgoingMessageQueue core_queue) {
        this.core_queue = core_queue;
    }

    public void setEncoder(final MessageStreamEncoder encoder) {
        core_queue.setEncoder(new MessageStreamEncoderAdapter(encoder));
    }

    public void sendMessage(Message message) {
        if (message instanceof MessageAdapter) {
            // the message must have been originally created by core and wrapped
            // so just use original core message...i.e. unwrap out of MessageAdapter
            core_queue.addMessage(((MessageAdapter) message).getCoreMessage(), false);
            return;
        }

        // message originally created by plugin
        core_queue.addMessage(new MessageAdapter(message), false);
    }

    public void registerListener(final OutgoingMessageQueueListener listener) {
        com.aelitis.azureus.core.networkmanager.OutgoingMessageQueue.MessageQueueListener core_listener =
                new com.aelitis.azureus.core.networkmanager.OutgoingMessageQueue.MessageQueueListener() {

                    public boolean messageAdded(com.aelitis.azureus.core.peermanager.messaging.Message message) {
                        if (message instanceof MessageAdapter) {
                            // the message must have been originally created by plugin encoder and wrapped
                            // so just use original plugin message...i.e. unwrap out of MessageAdapter
                            return listener.messageAdded(((MessageAdapter) message).getPluginMessage());
                        }

                        // message originally created by core
                        return listener.messageAdded(new MessageAdapter(message));
                    }

                    public void messageQueued(com.aelitis.azureus.core.peermanager.messaging.Message message) { /* nothing */
                    }

                    public void messageRemoved(com.aelitis.azureus.core.peermanager.messaging.Message message) { /* nothing */
                    }

                    public void messageSent(com.aelitis.azureus.core.peermanager.messaging.Message message) {
                        if (message instanceof MessageAdapter) {
                            // the message must have been originally created by plugin encoder and wrapped
                            // so just use original plugin message...i.e. unwrap out of MessageAdapter
                            listener.messageSent(((MessageAdapter) message).getPluginMessage());
                            return;
                        }

                        // message originally created by core
                        listener.messageSent(new MessageAdapter(message));
                    }

                    public void protocolBytesSent(int byte_count) {
                        listener.bytesSent(byte_count);
                    }

                    public void dataBytesSent(int byte_count) {
                        listener.bytesSent(byte_count);
                    }

                    public void flush() {
                    }
                };

        registrations.put(listener, core_listener); // save this mapping for later

        core_queue.registerQueueListener(core_listener);
    }

    public void deregisterListener(OutgoingMessageQueueListener listener) {
        // retrieve saved mapping
        com.aelitis.azureus.core.networkmanager.OutgoingMessageQueue.MessageQueueListener core_listener =
                (com.aelitis.azureus.core.networkmanager.OutgoingMessageQueue.MessageQueueListener) registrations.remove(listener);

        if (core_listener != null) {
            core_queue.cancelQueueListener(core_listener);
        }
    }

    public void notifyOfExternalSend(Message message) {
        if (message instanceof MessageAdapter) {
            // the message must have been originally created by core and wrapped
            // so just use original core message...i.e. unwrap out of MessageAdapter
            core_queue.notifyOfExternallySentMessage(((MessageAdapter) message).getCoreMessage());
            return;
        }

        // message originally created by plugin
        core_queue.notifyOfExternallySentMessage(new MessageAdapter(message));
    }

    public int getPercentDoneOfCurrentMessage() {
        return core_queue.getPercentDoneOfCurrentMessage();
    }

    public int getDataQueuedBytes() {
        return (core_queue.getDataQueuedBytes());
    }

    public int getProtocolQueuedBytes() {
        return (core_queue.getProtocolQueuedBytes());
    }

    public boolean isBlocked() {
        return (core_queue.isBlocked());
    }
}
